期刊
INTERNATIONAL JOURNAL OF CARDIOLOGY
卷 132, 期 1, 页码 145-147出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.ijcard.2007.07.152
关键词
Tuberous sclerosis; Rhabdomyoma; Erk; Akt
资金
- Polish Ministry of Science and Higher Education [N406 031/0916]
Tuberous sclerosis (TS) is a neurological disorder associated with the formation of tumors in several organs. Cardiac rhabdomyomas are possibly the earliest symptom of TS. Although rhabdomyomas are present in about half of TS patients, little is known of their molecular background since these tumors are rarely resected. Here we present a patient diagnosed with TS, in whom rhabdomyoma has been excised due to deterioration of hemodynamics. We found, that the tumor remained heterozygous for the affected TSC2 gene. To analyze molecular mechanisms implicated in rhabdomyoma growth, we determined the status of mTOR, Akt and Erk pathways. We found that Akt was not upregulated, while mTOR, Erk and its substrates were hyperactive. Classic activator of Erk, MEK, was only modestly active. We hypothesize that rhabdomyoma arising in TS may progress due to Erk potentiation. (c) 2007 Elsevier Ireland Ltd. All rights reserved.
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